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Marquise|Lab Grown|IGI

1.22ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG790611808

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790611808

Diamond specifications and retailer prices

From £248 GBP
As of November 4, 2026
Save £1,567 GBP (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,815 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.22ct lab-grown marquise diamond

This 1.22ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790611808 or 790611808. Listed at 22 retailers as of November 4, 2026, with prices from £248 to £1,815, a £1,567 spread on the same certified stone. Brilliant Earth lists it at £1,815. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611808
Dimensions11.10 × 5.54 × 3.47 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.10 mm5.54 mm1.22 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611808
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,815 GBP|Low: £248 GBP|High: £2,430 GBP|Avg: £822 GBP|-25.3%
Brilliant Earth
Retailer 2
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November 5, 2026
Retailer 15£248 GBP
Retailer 10£277 GBP
Retailer 5£287 GBP
Retailer 4£307 GBP
Retailer 21£307 GBP
Retailer 6£341 GBP
Retailer 17£422 GBP
Retailer 9£488 GBP
Retailer 18£496 GBP
Retailer 11£497 GBP
Retailer 16£530 GBP
Retailer 2£541 GBP
Retailer 3£599 GBP
Retailer 22£901 GBP
Retailer 14£982 GBP
Retailer 20£988 GBP
Retailer 8£1,020 GBP
Retailer 7£1,196 GBP
Retailer 12£1,202 GBP
Retailer 13£1,228 GBP
Retailer 19£1,782 GBP
Brilliant Earth£1,815 GBP

39 data points across 22 retailers

22 retailers£248 GBP to £1,815 GBP

A+
Cheapest Retailer
-
£248 GBP
A
Retailer 2
-
£277 GBP
View
Final sale: no returns
A
Retailer 3
-
£287 GBP
View
Retailer 4
-
£307 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£307 GBP
View
A
Retailer 6
-
£341 GBP
View
A
Retailer 7
-
£422 GBP
View
A
Retailer 8
-
£488 GBP
View
Retailer 9
-
£496 GBP
View
Price last confirmed 9 days ago
A
Retailer 10
-
£497 GBP
View
A
Retailer 11
-
£530 GBP
View
A
Retailer 12
-
£541 GBP
View
B+
Retailer 13
-
£599 GBP
View
B
Retailer 14
-
£901 GBP
View
B+
Retailer 15
-
£982 GBP
View
B+
Retailer 16
-
£988 GBP
View
B
Retailer 17
-
£1,020 GBP
View
B
Retailer 18
-
£1,196 GBP
View
B
Retailer 19
-
£1,202 GBP
View
B
Retailer 20
-
£1,228 GBP
View
Retailer 21
-
£1,782 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
19074408A · Nov 4
£1,815 GBP
$2,450 USD
View
21 more retailers have this diamond
Prices start from £248 GBPSave up to £1,567 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A+
1.22ct Marquise
£248 GBP